Infrared spectroscopy of thiophene up to 30 GPa. Polymerization after a pressure! cycle to 16 GPa
High Pressure Research(2006)
Abstract
Visual observations and Fourier-transform infrared spectroscopy were used to investigate thiophene (C4H4S) up to 30 GPa. A second-order phase transition was found around 6 GPa. Above 16 GPa thiophene undergoes an irreversible transformation. The product recovered at ambient exhibits the characteristics of a polymer.
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Key words
polymer,infrared spectroscopy,high pressure
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